Yes, I have seen the anime. I agree with you that it was really well done. I also liked it for its originality. Fantasy and Science Fiction isn’t a mixture you see everyday so it was a nice change from the run-of-the-mill anime. (And when I say run-of-the-mill I mean the kind where the plot and/or characters has been overused)
It had a lot of plot twists that I wasn’t expecting as well which is always a nice touch in my book. Some of the character profiles I will admit were some that I have seen before for example.
Pacifica Casull was not a very sympathetic or likeable character in the beginning but that changed gradually as the series progressed. She was the classic main character that doesn’t quite fit into the crowd and has to fight to obtain friends and repect.
Shannon Casull is the typical older brother who gives his sister a hard time but in the end loves her and is fiercely overprotective of her.
Raquel Casull is the sweet, sympathetic sister who is always there to support her family and is also extremely protective. She also possesses the quality of having a very sweet disposition but in the end is an excellent fighter.
Overall it is a good anime, though, and I would recommend it.